[rtems commit] score: Minor _Thread_Dispatch() optimization

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    aaaedba9811c75fffed80b7818053457ad9c5f2f
Changeset: http://git.rtems.org/rtems/commit/?id=aaaedba9811c75fffed80b7818053457ad9c5f2f

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Fri Nov 29 11:13:51 2013 +0100

score: Minor _Thread_Dispatch() optimization

It is not necessary to load the executing thread control again after
the context switch since it is an invariant of the executing thread.

---

 cpukit/score/src/threaddispatch.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/cpukit/score/src/threaddispatch.c b/cpukit/score/src/threaddispatch.c
index 0c8298f..ecf6810 100644
--- a/cpukit/score/src/threaddispatch.c
+++ b/cpukit/score/src/threaddispatch.c
@@ -156,12 +156,11 @@ void _Thread_Dispatch( void )
 #endif
 
     /*
-     * We have to obtain these values again after the context switch since the
+     * We have to obtain this value again after the context switch since the
      * heir thread may have migrated from another processor.  Values from the
      * stack or non-volatile registers reflect the old execution environment.
      */
     per_cpu = _Per_CPU_Get();
-    executing = per_cpu->executing;
 
 #if !defined( RTEMS_SMP )
     _ISR_Disable( level );